对于具有△12的三萜皂苷,其质谱容易发生A.α-裂解 B.γ-裂解 C.RDA裂解

题型:单项选择题

问题:

对于具有△12的三萜皂苷,其质谱容易发生

A.α-裂解

B.γ-裂解

C.RDA裂解

D.苄基裂解

E.麦氏重排

考点:中西医结合执业助理医师中医诊断学
题型:单项选择题

男性,67岁。患高血压心脏病10年,因劳累突然出现呼吸困难,不能平卧,急查血压80/60mmHg,心率130次/分,双肺底大量水泡音,心界向左扩大,心率130分/分,心音低钝,呈奔马律。

首选的药物是()

A.利尿剂

B.吗啡

C.西地兰

D.ACEI

E.多巴胺

题型:单项选择题

(b)Melody, a little known singer, entered into a contract with a recording company Marvo Records where she would record exclusively for them for a period of two years beginning January 2007. Soon afterwards, Melody’s career ‘took off’ and in spite of the contract with Marvo Records she entered into a new contract with a rival company to record exclusively for them. Marvo Records decide to approach the courts for relief. Required:In relation to the law of contract, state whether or not the court is likely to grant Marvo Records an interdict (injunction) to prevent the threatened breach of contract between Melody and Marvo Records. (5 marks)

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列举洗胃过程可能发生的并发症。

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无缝线路的铝热焊缝距轨枕边缘距离不得小于40mm。

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对设备进行维护保养或移动时必须要做什么安全措施?

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